Device for regulating the adjustment of tools on machine tools



Feb. 6, 1923.

P. ROTAT DEVICE FOR REGULATING THE ADJUSTMENT OF TOOLS ON MACHINE TOOLSFiled Jan. 18, 1921 v. v Wa 5%? b //V Vf/VTO)? ierre E0 Patented 6,

ti" i l Ti t-i .Lii

ROTAT, OF LYQN. FRANCE.

Application filed January 18, 1921.

Be it known that I. PIERRE ll-oiwr, a citi zen o l the French Republic,oi Lyon. France. have invented a certain new and useitul Device forRegulating: the Adjustment of Tools on llihichine 'lools. of which thefollowingis a specification.

This invention relates to a device for ulziting the adjustment of toolstools.

To obta n. exact regulation of tools on machine tools one is oftenobliged to wedge up these tools at certain points by means of one ormore pieces or shavings oi metal of a" kind. and these pieces areselected of a thickness suitable to eventually obtain the total thicknesdesired. These regulations occur freq .tly in workshops and cause veryappreciable loss of labour.

The present invention comprises a device which permits of obtaininginstantly the heightot wedgine' necessary long as this height is withinthe limits found in the constructi on of the device. 7

The device consists of a cylindrical pin to which are connected severalflat elements of different thicknesses, each comprising on one of theirsides a lug constructed of thin sheet metaL and provided at its end witha circular hole through which a which forms a connecting rod, and alsoforms an axis round which the flat elements are freely articulated.

The axial pin comprises a head it each end in order to retain theelements. The

regon machine thickness of each of the elements constitub.

ing the block and the number of said elements are calculated accordingto the total thickness that may be required.

The annexed drawing shows by way of example a form of construction ofthe inventionz- Fig. 1 is a view in section of a. block com prising fiveelements superposed normally.

Fig. 2 is a plan view. T io. 3 is a viewin section of the same block ofwhich the two extreme elements are superposed. whilst the three othershave been turned round the axle pin to take an opposite position.

Fig. 4 is a plan view position of Fig. 2. Fig. 5 is a further view insection of the same block showing the second and the fourth elementssuperposed. and the others in. the opposed position.

of the device in the pin passes freely,

ON DEACZ'IINE TO OBS.

Serial No. 438,127.

l igr, 6 illustrate he application o'l dc *ice to u tool-helm of alathe.

The block illustriiieijl comprises elements a. 71 r. r/ (,2 havingsimilar sui, ices and shapes but having? diiicreut tliiclmes cs. ltechelement con'iprises a lug toro'ied of a very thin metal sheet. one ofthe ends of which sunk flush in a recess in the corresponding, blockelement and fixed by welding. riveting or other means. the shapes oi":the various lugs 7, it 77. j, 71: being alike. projectliig ends o'lthese lugs are provided with round holes which are somewhat larger thanthe diameter of pin K which connects them so that they can assume acertain obliquity to said pin when the position, shown in Fin. 3 withre"ereuce to the block elements 7), (r. d.

The block elements are retained on the pin [by the heads Z. Z of thelatter. the head Z being; formed after said members have been placed inposition.

The pin 1 also carries :2 link plate u for the attachment of a chain227" tor supporting the device when not in use.

The superposition of the block elements is made in their order ofthickness, as shown in Fig. 1, and the thinnest element 6 at the top hasits lug It at its upper surface so as to abut under the head Z, whilstthe remaining elements have their lugs at their lower surfaces, thelowest lug g shutting against the head Z. This particular arrangement ofthe elements and the position of their claws is a feature of theinvention. as it alone allows all the possible combinations of any ofthe five elements without those elements not in use being in the way.

By way of example. Fig. 3 shows the ore treme elements a and c in use,which are brought into intimate contact and form a block for the tool 7placed inthe tool holder 10. The three elements 6, 0, (Z not in use areturned around so as to be opposite to those in use. and however muchtheir total thickness exceeds the space between the lugs g and 7c of theelements in use, they will assume a fan shaped position as shown in Fig.3, owing to the thinness of the lugs and the sizes of the holes of thesame embracing the pin Z.

Fig. 5 shows the elements 6 and d in use and the position assumed by theremaining elements a, c, e.

6 shows a tool f in the tool holder 32, the block elements employedbeing 0, 03

ill he ill c; the elements not in use are not visible the figure being across section.

-t can he understood that to obtain various thicknesses oi blocks inregular mathemati cal progression, the elements can he calculated andcombined accordingly. For examples with five elements it the element as4t millimetres thick, 3 millimetres c 2 millimetres (Z l millimetre ande 3; mini ,ietr e the total thickness would he 10 millimetres and ahalf, and all intermediary thicknesses could he obtained by in. prwgressionsv The number of elements could he greater or less than five andthe shape of same may vary as required.

What claim my invention and desire to secure hv Letters Patent ot theUnited States is 1. Device for regulatingthe adjustment of tools onmachine tools, comprising a series m superposed fiat elements a fiatlug; provided with an orifice fixed on one side of each element each lugbeing thinner than the Wedge element to which it is fixed, a pinprojecting through the orifices of said lugs withfree play, and heads oneach end of said pin to retain said lugs and said elements on said pin.

2. Device for regulating the adjustment of tools on machine tools,comprising a series of superposed fiat elements of diilerentthicknesses, atlat lug provided with an; orifice fixed on one side ofeach element, the one surface LMAABI of a hip; being; flush with the onesurface of? an elementeach lug being thinner than the respective Wedgeelement to which it is fixed. apin projecting through the orifices o'Fsaid lugs with tree play, and heads on each end of said pin to retainsaid lugs and said elements on said pin.

Device for regulating: the adjustment oi: the tools on machine tools,comprising a. series ot superposed fiat metal elements of s milar shapeand. having different thicknesses, the thinnest element hein at the topof the series and the thicknesses or" the remaining elements being;increased for each successive element towards the bottom ele menta flatlug: tormed of very thin plate metal, and provided with a round orificefixed on one side of each of said elements, the top surface of the lug"attached to the topmost element of the series being flush with said topsurface and the under surtaces of the remainino; lugs being; flush withthe bottom surfaces o1 their respective elements, pin of round sectionextending through the orifices of said lugs. the diameter of the pin.being substantially smaller than the diameters oi said orifices andheads on the ends of said pin.

In Witness whereof I have signed this specification in the presence oftwo Witnesses.

' PIERRE ROTAT. lVitnesses:

GASTON YEAUNIAUX, CYRUS B. FOLLMER.

